scratch/igc updated (e30aacad558 -> 37682ce0f6b)

[Gerd Moellmann]

gerd pushed a change to branch scratch/igc.

      from  e30aacad558 Convert SPLAT_PVEC to a function, restore an exhaustive 
switch
       new  50f3a9309d8 scan_stack with __builtin_unwind_init
       new  fc63e95e0af igc_check_fwd with is_vector argument
       new  37682ce0f6b Remove asm statement from scan_stack


Summary of changes:
 src/igc.c  | 23 ++++++++++++++++++++---
 src/igc.h  |  1 -
 src/lisp.h | 30 +++++++++++++++---------------
 3 files changed, 35 insertions(+), 19 deletions(-)